题目内容
计算与化简:
(1)4-|-6|-3×(-
);
(2)-32+(-1)2001÷
+(-5)2;
(3)2x2y-2(3xy-x2y)-xy;
(4)6a2b-[2ab2-3(a2b-2ab2)].
(1)4-|-6|-3×(-
| 1 |
| 3 |
(2)-32+(-1)2001÷
| 1 |
| 6 |
(3)2x2y-2(3xy-x2y)-xy;
(4)6a2b-[2ab2-3(a2b-2ab2)].
(1)原式=4-6+1
=-1;
(2)原式=-9-1×6+25
=-9-6+25
=10;
(3)原式=2x2y-6xy+2x2y-xy
=4x2y-7xy;
(4)原式=6a2b-2ab2+3a2b-6ab2
=9a2b-8ab2.
=-1;
(2)原式=-9-1×6+25
=-9-6+25
=10;
(3)原式=2x2y-6xy+2x2y-xy
=4x2y-7xy;
(4)原式=6a2b-2ab2+3a2b-6ab2
=9a2b-8ab2.
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